package com.ruoyi.syn;

/**
 * @Author syc
 * @Date Created in 9:36 2022/8/19
 * @Description 不安全的取钱, 两个人去银行取钱,账户
 */
public class UnsafeBank {
    public static void main(String[] args) {
        // 账户
        Account account = new Account(100, "基金");
        Drawing you = new Drawing(account, 50, "你");
        Drawing girlFriend = new Drawing(account, 100, "girlFriend");
        you.start();
        girlFriend.start();
    }
}

// 账户
class Account {
    int money; // 余额
    String name; // 卡名

    public Account(int money, String name) {
        this.money = money;
        this.name = name;
    }
}

//银行: 模拟取款
class Drawing extends Thread {
    Account account; // 账户
    // 取了多少钱
    int drawingMoney;
    // 现在手里有多少钱
    int nowMoney;
    public Drawing(Account account, int drawingMoney, String name) {
       super(name);
       this.account = account;
       this.drawingMoney = drawingMoney;
    }
    // 取钱
    @Override
    public void run() {
        // 锁的对象就是变化的量,需要增删改查的对象
        synchronized (account) {
            // 判断有内有钱
            if (account.money - drawingMoney < 0) {
                System.out.println(Thread.currentThread().getName() + "钱不够,取不了");
                return;
            }
            try {
                Thread.sleep(1000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            // 卡内余额 = 余额 - 你取的钱
            account.money = account.money - drawingMoney;
            // 你手里的钱
            nowMoney = nowMoney + drawingMoney;
            System.out.println(account.name + "余额为:" + account.money);
            System.out.println(this.getName() + "手里的钱:" + nowMoney);
        }
    }
}




